ERRDOWN/4/ERRDOWN_DOWNNOTIFY

Message

ERRDOWN/4/ERRDOWN_DOWNNOTIFY: Notify interface to change status to error-down. (InterfaceName=[STRING], Cause=[STRING])

After an error-down event occurred on an interface, the log was displayed, indicating the interface name and the error down cause.

Parameter Name	Parameter Meaning
InterfaceName	Interface name
Cause	Cause of the errordown event

The faults detected by service modules triggered errordown events. The possible causes are as follows:

EFM detected a link fault, which can be a fault that occurred on the remote end or a threshold-crossing event.
The MSTP edge port received BPDU packets.

Run the display error-down recovery command to check the values of the interface and error-down cause fields.
- If the value of the error-down cause field is bpdu-protection, go to Step 2.
- If the value of the error-down cause field is port security, See Port Security to check whether the number of secure MAC addresses reaches the threshold.
- If the value of the error-down cause field is efm-threshold-event, rectify the fault according to the log EFM/3/THRESHOLD.
- If the value of the error-down cause field is efm-remote-failure, rectify the fault according to the log EFM/2/NONTHRESHOLD.
Check whether the interface is specified as an edge port.
- If the interface is not specified as an edge port, go to Step 3.
- If the interface is specified as an edge port, go to Step 4.
Perform the following steps.
- Run:
```
interfaceinterface-type interface-num
```
  The interface view is displayed.
- Run:
```
undo stp edged-port and undo shutdown
```
  The edge port configuration is removed. Check whether the log still exists. If the log still exists, go to Step 4.
Collect log information and configuration information, and then contact technical support personnel.